Three-phase frequency converter



FIG. 1 illustrates a front side view of a first embodiment of a three-phase frequency converter.

FIG. 2 illustrates a rear side view of the three-phase frequency converter shown in FIG. 1.

FIG. 3 illustrates a left side view of the three-phase frequency converter shown in FIG. 1.

FIG. 4 illustrates a right side view of the three-phase frequency converter shown in FIG. 1.

FIG. 5 illustrates a top plan view of the three-phase frequency converter shown in FIG. 1.

FIG. 6 illustrates a bottom plan view of the three-phase frequency converter shown in FIG. 1.

FIG. 7 illustrates a front side perspective view of the three-phase frequency converter shown in FIG. 1.

FIG. 8 illustrates a bottom side perspective view of the three-phase frequency converter shown in FIG. 1.

FIG. 9 illustrates a front side view of a second embodiment of a three-phase frequency converter.

FIG. 10 illustrates a rear side view of the three-phase frequency converter shown in FIG. 9.

FIG. 11 illustrates a left side view of the three-phase frequency converter shown in FIG. 9.

FIG. 12 illustrates a right side view of the three-phase frequency converter shown in FIG. 9.

FIG. 13 illustrates a top plan view of the three-phase frequency converter shown in FIG. 9.

FIG. 14 illustrates a bottom plan view of the three-phase frequency converter shown in FIG. 9.

FIG. 15 illustrates a front side perspective view of the three-phase frequency converter shown in FIG. 9; and,

FIG. 16 illustrates a bottom side perspective view of the three-phase frequency converter shown in FIG. 9. 

CLAIM The ornamental design for a three-phase frequency converter, as shown and described. 